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ExpressionFunctionMeta

Defined in: expr/src/types.ts:13

UI/validation metadata for a function usable in an expression. Arithmetic operators (+ - * /) are modeled as ordinary functions. This describes only how a function appears and how many arguments it accepts — the per-format serializers live in their own (internal) maps, mirroring the datetime package's format-specific processors.

Properties​

arity?​

optional arity?: number | [number, number]

Defined in: expr/src/types.ts:20

Fixed arity (number) or inclusive range ([min, max], e.g. [n, Infinity] for variadic). Omit to leave the count unconstrained (any number of args, including 0).

label?​

optional label?: string

Defined in: expr/src/types.ts:15

UI label, e.g. '×' or 'Absolute value'. Falls back to the registry key.

caution

API documentation is generated from the latest commit on the main branch. It may be somewhat inconsistent with official releases of React Query Builder.